<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<div style="text-align: center" th:fragment="headDiv(username)">
  游戏app后台管理-管理员<span th:text="${username}"></span>
</div>

</body>
</html>